US3674119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Winch braking mechanism
Assignee: Dillingham Corp
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Filing: 1970-12-09
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Granted: 1972-07-04
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Expires: 1990-12-09
Abstract
Abstract A winch having an inertia responsive brake, and a velocity responsive actuator means also disposed in actuating relation to the said brake, wherein the actuator means is, at least to some extent, inertia responsive.
Inventors
- 👤 Wayne C Worstell
- 👤 Richard C Cousins
- 👤 Eugene A Cooley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:29
CPC Classifications
F; F16; F16D; F16D59/00; B; B66; B66B; B66B5/00; B66B5/02; B66B5/04; B66B5/16; B66B5/18; B66D; B66D5/00; B66D5/02; B66D5/12; B66D2700/00; B66D2700/07
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
In a braking system for a winch drum, a shaft drivingly connected to said drum, a flywheel, means providing a rotary connection between said flywheel and said shaft and urging said flywheel to rotate with said shaft but responsive to a predetermined change in velocity of said shaft to permit said flywheel to rotate relative to said shaft and move axially relative to said shaft, brake means actuated by the axial movement of said flywheel, velocity responsive means, and gearing means establishing a driving connection between said velocity responsive means and said flywheel whereby said flywheel can drive said velocity responsive means so that a predetermined velocity of said shaft causes axial movement of said flywheel, whereby axial movement of said flywheel and thus actuating of said brake can be effected by either a predetermined change in velocity or the attainment of a predetermined velocity of said shaft.
Claim 2
Dependent Claim
148 words
In a braking system for a winch drum, a shaft drivingly connected to said drum, a flywheel, means providing a rotary connection between said flywheel and said shaft and urging said flywheel to rotate with said shaft but responsive to a predetermined change in velocity of said shaft to permit said flywheel to rotate relative to said shaft and move axially relative to said shaft, brake means actuated by the axial movement of said flywheel, velocity responsive means, and gearing means establishing a driving connection between said velocity responsive means and said flywheel whereby said flywheel can drive said velocity responsive means so that a predetermined velocity of said shaft causes axial movement of said flywheel, whereby axial movement of said flywheel and thus actuating of said brake can be effected by either a predetermined change in velocity or the attainment of a predetermined velocity of said shaft.
Claim 3
Dependent Claim
119 words
In a braking system, a shaft drivingly connected to a rotary member, a flywheel, means urging said flywheel to move with said shaft but responsive to a predetermined change in velocity of said shaft to permit said flywheel to rotate at a velocity different from the shaft, brake means actuated by the flywheel upon said difference, motion multiplying means, and velocity responsive means connected by said motion multiplying means to said flywheel, and responsive when reaching a predetermined velocity to cause a difference in velocity between said flywheel and said shaft, whereby to actuate said brake so that the brake actuation can be effected either by a predetermined velocity or by a predetermined change in velocity of said shaft.
Claim 4
Dependent Claim
119 words
In a braking system, a shaft drivingly connected to a rotary member, a flywheel, means urging said flywheel to move with said shaft but responsive to a predetermined change in velocity of said shaft to permit said flywheel to rotate at a velocity different from the shaft, brake means actuated by the flywheel upon said difference, motion multiplying means, and velocity responsive means connected by said motion multiplying means to said flywheel, and responsive when reaching a predetermined velocity to cause a difference in velocity between said flywheel and said shaft, whereby to actuate said brake so that the brake actuation can be effected either by a predetermined velocity or by a predetermined change in velocity of said shaft.
Claim 5
Dependent Claim
126 words
In a braking system for a winch drum, a shaft drivingly connected to said drum, a flywheel, means providing a rotary connection between said flywheel and said shaft and urging said flywheel to rotate with said shaft but responsive to a predetermined change in velocity of said shaft to permit said flywheel to rotate relative to said shaft and move axially relative to said shaft, brake means actuated by the axial movement of said flywheel, and velocity responsive means responsive to a predetermined velocity of said shaft to cause axial movement of said flywheel, whereby axial movement of said flywheel and thus actuating of said brake can be effected by either a predetermined change in velocity or the attainment of a predetermined velocity of said shaft.
Claim 6
Dependent Claim
126 words
In a braking system for a winch drum, a shaft drivingly connected to said drum, a flywheel, means providing a rotary connection between said flywheel and said shaft and urging said flywheel to rotate with said shaft but responsive to a predetermined change in velocity of said shaft to permit said flywheel to rotate relative to said shaft and move axially relative to said shaft, brake means actuated by the axial movement of said flywheel, and velocity responsive means responsive to a predetermined velocity of said shaft to cause axial movement of said flywheel, whereby axial movement of said flywheel and thus actuating of said brake can be effected by either a predetermined change in velocity or the attainment of a predetermined velocity of said shaft.
Claim 7
Dependent Claim
59 words
A braking system as described in claim 3, in which the first named means provides a threaded connection between said flywheel and shaft and urgEs said flywheel to rotate with said shaft, but is responsive to a predetermined change in velocity in said shaft to permit said flywheel to thread along said shaft and hence move axially relative thereto.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |